UHP.RTYF.Geo-Crete: Eco-Innovation: Development of Sustainable and Affordable Ultra High Performance Geopolymer Concrete for Industrial Floor Applicat

在灾难性火灾中，混凝土的干燥收缩和剥落会导致混凝土的使用性能和结构失效，特别是超高性能混凝土。超高性能混凝土是一种用途广泛的新型混凝土，但其材料成本高、对环境的不良影响大等问题阻碍了其广泛应用。拟议项目的主要目标是利用来自废旧轮胎(RTSF)和再生骨料(RA)的再生钢纤维开发新颖、创新、抗裂、防火、低成本、用户和环保、低能耗、低碳足迹、可持续和耐久的超高性能土工聚合物混凝土(UHPGPC)。这将导致“UHP.RTYF.Geo-Crete”，可用作大型工业楼层和隧道等应用的地面板材。本项目将通过FTIR、SEM-EDS、TGA-DTA、XRD、MIP和X-射线CT扫描等多学科研究，研究收缩裂缝和火灾引起的剥落机理、纤维与基质的相容性、耐久性、热、物理、机械和微观结构性能。此外，它还将应对目前超高性能混凝土面临的挑战，即更高的材料成本；二氧化碳排放；有限自然集料资源的枯竭；环境、土壤、地表水和地下水的污染，以及与废弃轮胎、工业废物和建筑拆卸废物(CDW)的无系统处置有关的健康危害。英国谢菲尔德大学在纤维混凝土(FRC)设计和混凝土废料再利用方面处于世界领先地位。它还将为该研究员提供广泛和全面的培训，以确立她作为独立研究员的地位。

The drying shrinkage and the concrete spalling during the catastrophic fire can lead to serviceability and the structural failures, in particular, for ultra-high performance concrete (UHPC). UHPC is a new and versatile concrete, yet, its extensive application is hindered by high materials cost and high adverse impact on environments. The key objectives of the proposed project are to develop novel, innovative, crack-resistant, fire-resistant, low-cost, user and eco-friendly, lower energy, low carbon footprint, sustainable and durable Ultra High Performance GeoPolymer Concrete (UHPGPC) using Recycled Steel Fibres derived from waste Tyres (RTSF) and Recycled Aggregates (RA). This will lead to "UHP.RTYF.Geo-Crete" which can be used as slabs on grade for the large industrial floors and tunnels amongst other applications. This project will investigate the shrinkage cracking and the fire-induced spalling mechanisms, the fibre-matrix compatibility, durability, thermal, physical, mechanical, and the micro-structural properties through the multidisciplinary investigations including, FTIR, SEM-EDS, TGA-DTA, XRD, MIP and X ray CT scanning. Also, it will deal with the present challenges of UHPC viz., higher materials cost; CO2 emissions; depletion of restricted natural aggregate resources; pollution of environment, soil, surface and sub-surface water as well as health hazards associated with the unsystematic disposal of discarded tyres, industrial wastes and Construction & Demolition Wastes (CDW). The University of Sheffield, U.K. is world leading in Fibre Reinforced Concrete (FRC) design and re-using wastes in concrete. It will also offer a broad and comprehensive training to the fellow in order to establish her as an independent researcher.